Web app: add RTL support

Ref:

https://mui.com/material-ui/guides/right-to-left
https://m2.material.io/design/usability/bidirectionality.html

web/package-lock.json

@@ -8,6 +8,7 @@
       "name": "ntfy",
       "version": "1.0.0",
       "dependencies": {
+        "@emotion/cache": "^11.11.0",
         "@emotion/react": "^11.11.0",
         "@emotion/styled": "^11.11.0",
         "@mui/icons-material": "^5.4.2",
@@ -25,7 +26,9 @@
         "react-infinite-scroll-component": "^6.1.0",
         "react-router-dom": "^6.2.2",
         "stacktrace-gps": "^3.0.4",
-        "stacktrace-js": "^2.0.2"
+        "stacktrace-js": "^2.0.2",
+        "stylis": "^4.3.0",
+        "stylis-plugin-rtl": "^2.1.1"
       },
       "devDependencies": {
         "@vitejs/plugin-react": "^4.0.0",
@@ -1765,6 +1768,11 @@
         "stylis": "4.2.0"
       }
     },
+    "node_modules/@emotion/babel-plugin/node_modules/stylis": {
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/stylis/-/stylis-4.2.0.tgz",
+      "integrity": "sha512-Orov6g6BB1sDfYgzWfTHDOxamtX1bE/zo104Dh9e6fqJ3PooipYyfJ0pUmrZO2wAvO8YbEyeFrkV91XTsGMSrw=="
+    },
     "node_modules/@emotion/cache": {
       "version": "11.11.0",
       "resolved": "https://registry.npmjs.org/@emotion/cache/-/cache-11.11.0.tgz",
@@ -1777,6 +1785,11 @@
         "stylis": "4.2.0"
       }
     },
+    "node_modules/@emotion/cache/node_modules/stylis": {
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/stylis/-/stylis-4.2.0.tgz",
+      "integrity": "sha512-Orov6g6BB1sDfYgzWfTHDOxamtX1bE/zo104Dh9e6fqJ3PooipYyfJ0pUmrZO2wAvO8YbEyeFrkV91XTsGMSrw=="
+    },
     "node_modules/@emotion/hash": {
       "version": "0.9.1",
       "resolved": "https://registry.npmjs.org/@emotion/hash/-/hash-0.9.1.tgz",
@@ -3314,6 +3327,14 @@
         "node": ">=8"
       }
     },
+    "node_modules/cssjanus": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/cssjanus/-/cssjanus-2.1.0.tgz",
+      "integrity": "sha512-kAijbny3GmdOi9k+QT6DGIXqFvL96aksNlGr4Rhk9qXDZYWUojU4bRc3IHWxdaLNOqgEZHuXoe5Wl2l7dxLW5g==",
+      "engines": {
+        "node": ">=10.0.0"
+      }
+    },
     "node_modules/csstype": {
       "version": "3.1.2",
       "resolved": "https://registry.npmjs.org/csstype/-/csstype-3.1.2.tgz",
@@ -6351,9 +6372,20 @@
       }
     },
     "node_modules/stylis": {
-      "version": "4.2.0",
+      "version": "4.3.0",
-      "resolved": "https://registry.npmjs.org/stylis/-/stylis-4.2.0.tgz",
+      "resolved": "https://registry.npmjs.org/stylis/-/stylis-4.3.0.tgz",
-      "integrity": "sha512-Orov6g6BB1sDfYgzWfTHDOxamtX1bE/zo104Dh9e6fqJ3PooipYyfJ0pUmrZO2wAvO8YbEyeFrkV91XTsGMSrw=="
+      "integrity": "sha512-E87pIogpwUsUwXw7dNyU4QDjdgVMy52m+XEOPEKUn161cCzWjjhPSQhByfd1CcNvrOLnXQ6OnnZDwnJrz/Z4YQ=="
+    },
+    "node_modules/stylis-plugin-rtl": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/stylis-plugin-rtl/-/stylis-plugin-rtl-2.1.1.tgz",
+      "integrity": "sha512-q6xIkri6fBufIO/sV55md2CbgS5c6gg9EhSVATtHHCdOnbN/jcI0u3lYhNVeuI65c4lQPo67g8xmq5jrREvzlg==",
+      "dependencies": {
+        "cssjanus": "^2.0.1"
+      },
+      "peerDependencies": {
+        "stylis": "4.x"
+      }
     },
     "node_modules/supports-color": {
       "version": "5.5.0",

web/package.json

@@ -11,6 +11,7 @@
     "lint": "eslint --report-unused-disable-directives --ext .js,.jsx ./src/"
   },
   "dependencies": {
+    "@emotion/cache": "^11.11.0",
     "@emotion/react": "^11.11.0",
     "@emotion/styled": "^11.11.0",
     "@mui/icons-material": "^5.4.2",
@@ -28,7 +29,9 @@
     "react-infinite-scroll-component": "^6.1.0",
     "react-router-dom": "^6.2.2",
     "stacktrace-gps": "^3.0.4",
-    "stacktrace-js": "^2.0.2"
+    "stacktrace-js": "^2.0.2",
+    "stylis": "^4.3.0",
+    "stylis-plugin-rtl": "^2.1.1"
   },
   "devDependencies": {
     "@vitejs/plugin-react": "^4.0.0",

web/src/components/App.jsx

@@ -3,6 +3,7 @@ import { createContext, Suspense, useContext, useEffect, useState, useMemo } fro
 import { Box, Toolbar, CssBaseline, Backdrop, CircularProgress, useMediaQuery, ThemeProvider, createTheme } from "@mui/material";
 import { useLiveQuery } from "dexie-react-hooks";
 import { BrowserRouter, Outlet, Route, Routes, useParams } from "react-router-dom";
+import { useTranslation } from "react-i18next";
 import { AllSubscriptions, SingleSubscription } from "./Notifications";
 import { darkTheme, lightTheme } from "./theme";
 import Navigation from "./Navigation";
@@ -21,6 +22,7 @@ import Signup from "./Signup";
 import Account from "./Account";
 import "../app/i18n"; // Translations!
 import prefs, { THEME } from "../app/Prefs";
+import RTLCacheProvider from "./RTLCacheProvider";
 
 export const AccountContext = createContext(null);
 
@@ -39,17 +41,26 @@ const darkModeEnabled = (prefersDarkMode, themePreference) => {
 };
 
 const App = () => {
+  const { i18n } = useTranslation();
+  const languageDir = i18n.dir();
+
   const [account, setAccount] = useState(null);
   const accountMemo = useMemo(() => ({ account, setAccount }), [account, setAccount]);
   const prefersDarkMode = useMediaQuery("(prefers-color-scheme: dark)");
   const themePreference = useLiveQuery(() => prefs.theme());
   const theme = React.useMemo(
-    () => createTheme(darkModeEnabled(prefersDarkMode, themePreference) ? darkTheme : lightTheme),
+    () => createTheme({ ...(darkModeEnabled(prefersDarkMode, themePreference) ? darkTheme : lightTheme), direction: languageDir }),
-    [prefersDarkMode, themePreference]
+    [prefersDarkMode, themePreference, languageDir]
   );
 
+  useEffect(() => {
+    document.documentElement.setAttribute("lang", i18n.language);
+    document.dir = languageDir;
+  }, [i18n.language, languageDir]);
+
   return (
     <Suspense fallback={<Loader />}>
+      <RTLCacheProvider>
         <BrowserRouter>
           <ThemeProvider theme={theme}>
             <AccountContext.Provider value={accountMemo}>
@@ -70,6 +81,7 @@ const App = () => {
             </AccountContext.Provider>
           </ThemeProvider>
         </BrowserRouter>
+      </RTLCacheProvider>
     </Suspense>
   );
 };

web/src/components/RTLCacheProvider.jsx

@@ -0,0 +1,22 @@
+import React from "react";
+
+import rtlPlugin from "stylis-plugin-rtl";
+import { CacheProvider } from "@emotion/react";
+import createCache from "@emotion/cache";
+import { prefixer } from "stylis";
+import { useTranslation } from "react-i18next";
+
+// https://mui.com/material-ui/guides/right-to-left
+
+const cacheRtl = createCache({
+  key: "muirtl",
+  stylisPlugins: [prefixer, rtlPlugin],
+});
+
+const RTLCacheProvider = ({ children }) => {
+  const { i18n } = useTranslation();
+
+  return i18n.dir() === "rtl" ? <CacheProvider value={cacheRtl}>{children}</CacheProvider> : children;
+};
+
+export default RTLCacheProvider;